In tonight's episode, the Married At First Sight 'star' opens up in the Diary Rooom.
He tells Big Brother of the Love Islander: "She's a bit standoffish which I like, but then all of a sudden when that little twinkle comes... she's got a little sense of mischievousness which I like.
"I'm buzzing off that, I'd love to develop something there and sometimes, I'll be honest, I'm going to say it as it is, I don't want to come across as a big head, but I see her look at me sometimes and there's a little something there."
Ben continues: "And she puts me on the back foot a little bit, and I like that. I like to be put on the back foot.
"I don't think she knows where she is or what she is and I'm a bit like that I suppose."
Ben's diary room confession follows him cooling things off with Roxanne Pallett.
The pair had been flirting up a storm in the house, despite Roxanne having a fiancé.
Earlier in the week, Roxanne confessed: "I'm finding it hard to remember my life outside. I'm struggling to remember Lee's [my fiancé] voice."
She then kissed her engagement ring and told herself: "You're still my boyfriend."
In tonight's show, Roxanne admits: "I'm scared to go out but I don't know what I'm scared of."
Jermaine Pennant replied: "You don't know what you're going out to. Is your family or your missus or anyone going to be fuming? Is there backlashes when you come out?"
Roxanne added: "It's concentrated in here. I hope my fella understands... I was on the fence about this. He was the one that was saying 'Do it, do it!'"
Celebrity Big Brother 2018 continues nightly on Channel 5.